What is mechanical digestion, Biology

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What is mechanical digestion? In molluscs, arthropods, earthworms, birds and vertebrates, in general, which organs respectively participate in this type of digestion?

Mechanical digestion is the fragmentation of food aided by specialized physical structures, like teeth, previous to extracellullar digestion. The mechanical fragmentation of food helps digestive enzymatic reactions because it gives a larger total area for the contact among enzymes and their substrates.

 


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